YElectroplating vs Electrolysis
Electrolysis yog dab tsi?
Electrolysis yog txheej txheem, uas siv cov hluav taws xob ncaj qha los rhuav tshem cov tshuaj lom neeg. Yog li cov txheej txheem electrolysis xav tau ib qho chaw sab nraud ntawm hluav taws xob rau kev ua haujlwm. Cov tshuaj tiv thaiv spontaneous raug yuam ua hauv electrolysis. Yuav kom electrolysis tshwm sim, cov khoom yuav tsum dhau hluav taws xob tam sim no. Yog li ntawd, rau qhov no, cov tshuaj electrolytic yuav tsum muaj. Qhov no muaj ions dawb, uas yog tsim los ntawm ib yam khoom nyob rau hauv lub molten theem los yog yaj nyob rau hauv lwm cov kuab tshuaj. Oxidation-txo cov tshuaj tiv thaiv yog tshwm sim hauv electrolysis. Yog li hauv paus muaj ob lub electrodes hu ua anode thiab cathode. Cov ions tsis sib haum xeeb yog nyiam rau cov electrodes. Cov tshuaj tiv thaiv oxidation tshwm sim ntawm qhov anode, thiab qhov txo qis tshwm sim tshwm sim ntawm cathode. Electrodes yog immersed nyob rau hauv cov tshuaj electrolyte. Feem ntau, cov kev daws teeb meem no yog cov kev daws teeb meem ionic ntsig txog hom electrode. Piv txwv li, tooj liab electrodes yog immersed nyob rau hauv tooj liab sulfate tov thiab nyiaj electrodes yog immersed nyob rau hauv silver chloride tov. Cov kev daws teeb meem no txawv; yog li ntawd, lawv yuav tsum sib cais. Txoj kev uas feem ntau cais lawv yog tus choj ntsev. Lub zog rau ion txav mus rau cov electrodes thiab rau lawv txo lossis oxidation yog muab los ntawm cov khoom siv sab nraud.
Electrolysis yog siv dav hauv cov tswv yim thiab siv hauv cov hlwb electrolytic. Piv txwv li, yog tias peb muab tooj liab thiab nyiaj los ua ob lub electrodes hauv lub xov tooj ntawm tes, nyiaj yog txuas nrog lub davhlau ya nyob twg zoo ntawm lub zog sab nraud (lub roj teeb). Tooj liab txuas nrog rau lub davhlau ya nyob twg tsis zoo. Txij li thaum lub davhlau ya nyob twg tsis zoo yog electron nplua nuj, electrons ntws los ntawm no mus rau tooj liab electrode. Yog li ntawd tooj liab txo. Ntawm cov nyiaj electrode, cov tshuaj tiv thaiv oxidation tshwm sim, thiab cov hluav taws xob tso tawm tau muab rau lub tshuab hluav taws xob tsis zoo ntawm lub roj teeb. Hauv qab no yog tag nrho cov tshuaj tiv thaiv nyob rau hauv ib tug electrolytic cell, uas muaj tooj liab thiab nyiaj electrodes.
2Ag(s)+ Cu2+ (aq) ⇌2 Ag+ (aq)+ Cu(s)
Industrially, lub tswv yim electrolysis yog siv los ua cov hlau ntshiab xws li Al, Mg, Ca, Na thiab K. Ntxiv rau nws yog siv rau kev tsim cov tshuaj chlorine, hydrogen roj, oxygen thiab lwm yam.
Electroplating
Electroplating yog ib txoj kev plating rau txheej electrodes nrog hlau ions. Lub hauv paus ntawm cov txheej txheem no yog electrolysis. Yog li ntawd, electroplating xav tau ib qho hluav taws xob sab nraud kom txav cov hlau ions. Thaum xub thawj cov hlau ions yuav dawb hauv cov tshuaj. Nrog rau cov khoom siv hluav taws xob tam sim no, cov ions no yuav txav mus rau hauv cathode thiab yuav raug txo kom muaj cov hlau tsis muaj zog. Cov hlau no yuav coated conductive electrode. Electroplating yog siv los ua kom lub thickness ntawm txheej. Hauv kev lag luam hniav nyiaj hniav kub, nws yog siv los tsho tiv thaiv cov khoom pheej yig (piv txwv li cov khoom ua los ntawm tooj liab) nrog nyiaj lossis kub. Qhov no kuj yog siv los npog cov khoom siv hlau nrog lwm cov hlau. Los ntawm cov txheej txheem no, cov khoom uas thawj zaug hlau tsis muaj tuaj yeem muab rau nws. Kev tiv thaiv corrosion, hnav tsis kam, lubricity yog ob peb yam khoom, uas tuaj yeem muab rau cov hlau.
Qhov txawv ntawm Electroplating thiab Electrolysis yog dab tsi?
• Electrolysis yog txheej txheem, uas siv cov hluav taws xob ncaj qha los rhuav cov tshuaj lom neeg. Electroplating yog ib txoj kev plating rau txheej electrodes nrog hlau ions siv hluav taws xob tam sim no.
• Electrolysis yog cov txheej txheem tseem ceeb tom qab electroplating.
